In this step all of the imports and usage of akanda.rug is updated to
use astara. Addtionally rename all internal references from Akanda to
Astara.
Change-Id: I0cb8596066d949bceaadc4718b210fc373b5f296
Depends-On: I87106ae63747291bb6424839b5155f53136c54f9
Implements: blueprint convert-to-astara